What battery sizes are available?

This article contains information on battery capacities and nominal voltage for the products Carmanah offers.

The batteries listed below are non-proprietary and can be purchased locally via a battery vendor or directly from Carmanah. For clarification on the battery needed for your system, click on the blue chat box in the bottom right corner of the page 🗨️ at https://carmanah.com/contact-support/.

Battery Sizes Available

Capacity Image
7 Ah

18 Ah

35 Ah

55 Ah 

100 Ah

Beacon Systems

Product Generation Number of Batteries Model Battery Specifications
Gen 1 (Legacy)¹ 1 R820, R247, R829

Voltage = 4 V

Capacity = 50 Ah

Gen 2  (Legacy)²³ 1 or 2 R820, R247, R829

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 17.2 Ah

Terminal Type = NB

Gen 3 (Legacy) 1 SC315

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 35 Ah

Terminal Type = NB

Gen 3 (E Series) 2

R920-E, R820-E,

R247-E, R829-E

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 7 Ah

Terminal Type = F1

Gen 3 (F Series) 2

R920-F, R820-F,

R247-F, R829-F

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 18 Ah

Terminal Type = NB

Gen 3 (G Series) 1

SC315-G, R820-G,

R247-G, R829-G

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 35/55/100 Ah

Terminal Types = various

MX Series Up to 2 R920-MX, R829-MX, R247-MX

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 7/18/35/55/100 Ah

Terminal Types = various

¹Legacy battery no longer available.

²Legacy capacity; replaced with 18 Ah equivalent.

³Batteries from Carmanah come with new cabling.

*Terminal types:

  • NB = secured using a nut and bolt 
  • F1 = Faston terminals (for slip-on connectors)
  • Various = different sized terminals for securing with nut and bolt

SpeedCheck Radar Speed Signs

Model Number of Batteries Battery Specifications
SPEEDCHECK-12

Up to 3

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 18 Ah

Terminal Type = NB

SPEEDCHECK-15

SPEEDCHECK-18

Cabinet = 1

Integrated solar kit¹ = up to 2

Type = Sealed Lead Acid (AGM)

Voltage = 12 V

Capacity = 35/55/100 Ah

Terminal Type = various

¹Integrated solar kit versions of the SPEEDCHECK-15/18 utilize the same battery type as SPEEDCHECK-12

*Terminal types:

  • NB = secured using a nut and bolt 
  • Various = different sized terminals for securing with nut and bolt
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